Detecting Exploitation of Local Vulnerabilities Through Trend Micro Vision One and Cloud One<\/title> <link href=\"https:\/\/fonts.googleapis.com\/css?family=Open+Sans:300,300i,400,400i,600\" rel=\"stylesheet\">\n<link href=\"\/\/customer.cludo.com\/css\/296\/1798\/cludo-search.min.css\" type=\"text\/css\" rel=\"stylesheet\"> <link rel=\"stylesheet\" href=\"\/etc.clientlibs\/trendresearch\/clientlibs\/clientlib-trendresearch.min.css\" type=\"text\/css\"> <meta property=\"og:url\" content=\"https:\/\/www.trendmicro.com\/en_us\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-mi.html\"><br \/>\n<meta property=\"og:title\" content=\"Detecting Exploitation of Local Vulnerabilities Through Trend Micro Vision One and Cloud One\"><br \/>\n<meta property=\"og:site_name\" content=\"Trend Micro\"><br \/>\n<meta property=\"og:image\" content=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-micro-vision-one-and-cloud-one\/RESIZED%20Dirty%20Pipe.jpg\"><br \/>\n<meta property=\"og:locale\" content=\"en_US\"> <meta name=\"twitter:card\" content=\"summary_large_image\"><br \/>\n<meta name=\"twitter:site\" content=\"@TrendMicro\"><br \/>\n<meta name=\"twitter:title\" content=\"Detecting Exploitation of Local Vulnerabilities Through Trend Micro Vision One and Cloud One\"><br \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-micro-vision-one-and-cloud-one\/RESIZED%20Dirty%20Pipe.jpg\"> <\/head> <body class=\"articlepage page basicpage context-business\" id=\"readabilityBody\" readability=\"50.720249221184\">  <a id=\"page-scroll\" title=\"VerticalPageScroll\" href=\"javascript:jumpScroll($(this).scrollTop());\"> <span class=\"icon-chevron-up\"><\/span> <\/a>  <\/p>\n<div class=\"root responsivegrid\">\n<div class=\"aem-Grid aem-Grid--12 aem-Grid--default--12 \">\n<div class=\"articleBodyNoHero aem-GridColumn aem-GridColumn--default--12\">\n<div class=\"research-layout article container\" role=\"contentinfo\">\n<article class=\"research-layout--wrapper row\" data-article-pageid=\"1120482388\">\n<div class=\"col-xs-12 col-md-12 one-column\">\n<div class=\"col-xs-12 col-md-12\" readability=\"9.2214983713355\">\n<div class=\"article-details\" role=\"heading\" readability=\"37.85667752443\"> <span class=\"article-details__bar\" role=\"img\"><\/span> <\/p>\n<p class=\"article-details__display-tag\">Exploits & Vulnerabilities<\/p>\n<p class=\"article-details__description\">We provide a guide to detecting Dirty Pipe, a Linux kernel vulnerability\u202ftracked as CVE-2022-0847.\u202f <\/p>\n<p class=\"article-details__author-by\">By: Sunil Bharti <time class=\"article-details__date\">April 06, 2022<\/time> <span>Read time: <\/span><span class=\"eta\"><\/span> (<span class=\"words\"><\/span> words) <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<hr class=\"research-layout-divider\"> <main class=\"main--content col-xs-12 col-md-8 col-md-push-2\"> <\/p>\n<div class=\"richText\" readability=\"45.195074530136\">\n<div readability=\"36.352559948153\">\n<p>This blog provides threat analysts a guide to detecting an arbitrary file overwrite vulnerability in Linux Kernel, also known as Dirty Pipe. Dirty Pipe is a local privilege escalation vulnerability that is tracked as <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2022-0847\" target=\"_blank\" rel=\"noopener\">CVE-2022-0847<\/a>. It has a CVSS score of 7.8 and was discovered by IONOS software developer <a href=\"https:\/\/dirtypipe.cm4all.com\/\" target=\"_blank\" rel=\"noopener\">Max Kellermann<\/a>.\u202f<\/p>\n<p>\u202fThis vulnerability exists in Linux kernel and exploits the flaw in Linux Kernel memory management in the way pipe page caches are merged and overwrites other page caches. The vulnerability is easy to exploit and allows a low-privileged user to escalate to root privilege on the host. There have also been various public proof-of-concept exploits.\u202f<\/p>\n<p>\u202fAttackers can abuse this flaw to write to pages in the page cache of read-only files. They can also execute their code to escalate their privileges on the system.\u202f\u202f<\/p>\n<p>\u202fThe following sections outline how to detect the abuse of this vulnerability using Trend Micro Vision One\u2122\u202fand Trend Micro Cloud One\u2122.\u202f<\/p>\n<p><span class=\"body-subhead-title\">\u202fTrend Micro Cloud One\u2122 \u2013 Workload Security\u202f<\/span><\/p>\n<p><b>\u202fModules\u202f\u202f<\/b><\/p>\n<p><b>1. \u202fLog Inspection\u202f\u202f<\/b><\/p>\n<p>\u202fThrough this module, we can tap into the authentication-related events on the host.\u202f\u202f<\/p>\n<p>Upon the execution of the proof of concept, we can deduce suspicious activity based on observations on \u201c\/var\/log\/auth.log\u201d. Successful exploitation can create the following system logs that can be used for detection. It should be noted, however, there are also cases where the exploitation of this vulnerability does not leave any trace in the logs.\u202f<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"image\">\n<figure class=\"image-figure\"> <img decoding=\"async\" src=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-micro-vision-one-and-cloud-one\/Figure%201%20Sysleogs.png\" alt=\"Syslog inspection for the detection of CVE-2022-0847\"><figcaption>Figure 1. Syslog inspection for the detection of CVE-2022-0847<\/figcaption><\/figure>\n<\/p><\/div>\n<div>\n<div class=\"richText\" readability=\"31\">\n<div readability=\"7\">\n<p><b>2. Antimalware<\/b><\/p>\n<p>This module detects the exploitation of this vulnerability in real-time using behavior monitoring.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"image\">\n<figure class=\"image-figure\"> <img decoding=\"async\" src=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-micro-vision-one-and-cloud-one\/Figure%202%20Antimalware%20detection.png\" alt=\"Antimalware detection\"><figcaption>Figure 2. Antimalware detection<\/figcaption><\/figure>\n<\/p><\/div>\n<div class=\"richText\" readability=\"33.5\">\n<div readability=\"12\">\n<p><b>3. Activity monitoring<\/b><\/p>\n<p>The module can detect process, file, and network activities on endpoints running Workload Security. In this case, we will examine the file activity since there is no network component to this attack scenario.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"richText\" readability=\"33\">\n<div readability=\"11\">\n<p>Trend Micro Vision One<\/p>\n<p>Workload Security\u2019s correlation of telemetry and detections provides an initial security context that allows security teams to track and monitor the threats that might abuse CVE-2022-0847. In the next section, Trend Micro Vision One provides more information on the paths and events that occur in real time. <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"richText\" readability=\"33.5\">\n<div readability=\"12\">\n<p><span class=\"body-subhead-title\">Observed Attack Techniques (OATs)<\/span><\/p>\n<p>OATs are generated from individual events that provide security value. To investigate the possible exploitation attempts using this vulnerability, analysts can look for these OAT IDs from many other helper OAT triggers that indicate suspicious activities on the affected host.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"image\">\n<figure class=\"image-figure\"> <img decoding=\"async\" src=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-micro-vision-one-and-cloud-one\/Figure%203%20Vision%20One%20OAT%20triggers.png\" alt=\"Vision One OAT triggers\"><figcaption>Figure 3. Vision One OAT triggers<\/figcaption><\/figure>\n<\/p><\/div>\n<div class=\"richText\" readability=\"31\">\n<div readability=\"7\">\n<p>The following OAT IDs can be used while threat hunting:<\/p>\n<ul>\n<li><span class=\"rte-red-bullet\">F5005: Identified Privilege Escalation AttemptF011: Identified Modification of Linux Passwd File<\/span><\/li>\n<li><span class=\"rte-red-bullet\">F5025: Identified Exploitation of Dirty Pipe Vulnerability<\/span><\/li>\n<li><span class=\"rte-red-bullet\">F2745: Unknown Process Launched From TMP Directory<\/span><\/li>\n<li><span class=\"rte-red-bullet\">F5012: Arbitrary File Overwrite via CVE-2022-0847<\/span><\/li>\n<\/ul><\/div>\n<\/p><\/div>\n<div class=\"richText\" readability=\"33.5\">\n<div readability=\"12\">\n<p><span class=\"body-subhead-title\">Trend Micro Vision One Workbench app<\/span><\/p>\n<p>The Trend Micro Vision One Workbench app helps analysts see significant correlated events intelligently based on occurrences throughout the entire fleet of workloads. The left side of the diagram shows the summarized sequence of events happening one after another. Analysts can view the different fields of interest that are considered important and provide security value on the right. The app allows security teams to see the compromised assets and isolate those that can be potentially affected while patching procedures are ongoing.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"image\">\n<figure class=\"image-figure\"> <img decoding=\"async\" src=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-micro-vision-one-and-cloud-one\/Figure%204%20Suspicious%20activity%20detection.png\" alt=\"Suspicious activity detection\"><figcaption>Figure 4. Suspicious activity detection<\/figcaption><\/figure>\n<\/p><\/div>\n<div class=\"image\">\n<figure class=\"image-figure\"> <img decoding=\"async\" src=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-micro-vision-one-and-cloud-one\/Figure%205%20Malicious%20binary%20detection.png\" alt=\"Malicious binary detection\"><figcaption>Figure 5. Malicious binary detection<\/figcaption><\/figure>\n<\/p><\/div>\n<div class=\"richText\" readability=\"35\">\n<div readability=\"15\">\n<p><span class=\"body-subhead-title\">Root cause analysis<\/span><\/p>\n<p>\u201cExecution Profile\u201d is a feature in Vision One that generates graphs for defenders. We can expand for fields like \u201cprocessCmd\u201d and \u201cobjectCmd\u201d from the search app or the threat-hunting app to look for different activities being observed in a given period; such activities are process creation, file creation, and inbound and outbound network activity, among others. The following operations can be observed when this vulnerability is being exploited.<\/p>\n<p>a. \u201c\/etc\/passwd\u201d file overwrite<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"image\">\n<figure class=\"image-figure\"> <img decoding=\"async\" src=\"https:\/\/www.trendmicro.com\/content\/dam\/trendmicro\/global\/en\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-micro-vision-one-and-cloud-one\/Figure%206%20RCA.png\" alt=\"RCA Showing \u201c\/etc\/passwd\u201d overwrite attempt\"><figcaption>Figure 6. RCA Showing \u201c\/etc\/passwd\u201d overwrite attempt<\/figcaption><\/figure>\n<\/p><\/div>\n<div class=\"richText\" readability=\"31.5\">\n<div readability=\"8\">\n<p><span class=\"body-subhead-title\">Conclusion<\/span><\/p>\n<p>Security teams that seek to prevent threat actors from exploiting the Dirty Pipe vulnerability must note the following points:<\/p>\n<ul>\n<li><span class=\"rte-red-bullet\">Incident responders can search for the following string in the “\/var\/log\/auth.log”: “(to root) <user> on none”. Any user in the system will be able to detect possible exploitation.<br \/><\/span><\/li>\n<li><span class=\"rte-red-bullet\">Malicious actors that have established a foothold in an enterprise\u2019s system through cryptomining, malware infection, or cyberespionage can exploit this vulnerability as their means of intrusion enables access to root privileges.<\/span><\/li>\n<li><span class=\"rte-red-bullet\">There are many ways to exploit this vulnerability without leaving a trace in the auth.log. We advise security teams to apply the necessary patches as soon as possible, and to enable all applicable solutions for detecting and blocking abuse.<\/span><\/li>\n<\/ul><\/div>\n<\/p><\/div>\n<div class=\"richText\" readability=\"38.324297188755\">\n<div readability=\"25.237951807229\">\n<p>Security solutions that provide comprehensive protection for your system can keep this and other threats at bay:<\/p>\n<p><a href=\"https:\/\/www.trendmicro.com\/en_us\/business\/services\/managed-xdr.html\" target=\"_self\" rel=\"noopener\">Trend Micro Vision One<\/a> helps security teams gain an overall view of attempts in ongoing campaigns by providing them a correlated view of multiple layers such as email, endpoints, servers, and cloud workloads. Security teams can gain a broader perspective and a better understanding of attack attempts and detect suspicious behavior that would otherwise seem benign when viewed from a single layer alone..<\/p>\n<p><a href=\"https:\/\/www.trendmicro.com\/en_us\/business\/products\/hybrid-cloud\/cloud-one-workload-security.html\" target=\"_self\" rel=\"noopener\">Trend Micro Cloud One \u2013 Workload Security<\/a> helps defend systems against vulnerability exploits, malware, and unauthorized change. It can protect a variety of environments such as virtual, physical, cloud, and containers. Using advanced techniques like machine learning (ML) and virtual patching, the solution can automatically secure new and existing workloads both against known and new threats.<\/p>\n<p>MITRE ATT&CK<\/p>\n<table cellpadding=\"1\" cellspacing=\"0\" border=\"1\">\n<tbody readability=\"1\">\n<tr>\n<td>Technique<\/td>\n<td>ID<\/td>\n<\/tr>\n<tr readability=\"2\">\n<td>Exploitation for Privilege Escalation <\/td>\n<td>T1068<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<section class=\"tag--list\">\n<p>Tags<\/p>\n<\/section>\n<p> <\/main> <\/article>\n<\/div>\n<\/div><\/div>\n<\/div>\n<p>   <\/p>\n<p> <span>sXpIBdPeKzI9PC2p0SWMpUSM2NSxWzPyXTMLlbXmYa0R20xk<\/span> <\/p>\n<p>   <\/body> Read More <a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/22\/d\/detecting-exploitation-of-local-vulnerabilities-through-trend-mi.html\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We provide a guide to detecting Dirty Pipe, a Linux kernel vulnerability\u202ftracked as CVE-2022-0847.\u202f Read More HERE…<\/p>\n","protected":false},"author":2,"featured_media":46069,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[61],"tags":[9510,9555,9509],"class_list":["post-46068","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trendmicro","tag-trend-micro-research-articles-news-reports","tag-trend-micro-research-exploitsvulnerabilities","tag-trend-micro-research-research"],"yoast_head":"\n<title>Detecting Exploitation of Local Vulnerabilities Through Trend Micro Vision One\u2122 and Cloud One\u2122 2026 | ThreatsHub Cybersecurity News<\/title>\n<meta name=\"description\" content=\"ThreatsHub Cybersecurity News | ThreatsHub.org | Cloud Security & Cyber Threats Analysis Hub. 100% Free OSINT Threat Intelligent and Cybersecurity News.\" \/>\n<meta name=\"robots\" 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